The FL 6500 from PerkinElmer Inc is a Pulse Fluorescence Spectrometer that operates at a wavelength of 200 nm - 900 nm. It has a wavelength accuracy of 0.5 nm, wavelength reproducibility of 0.2 nm, and maximum wavelength scan speed of 24,000 nm/min. This spectrometer has resolutions of 1, 2.5, 5, 10 & 20 nm and a response time above 0.002 sec. It uses a pulse xenon lamp as an illumination source and a photomultiplier tube as the detector. This spectrometer has a monochromator with 1200 grooves/mm and minimum RMS signal-to-noise ratio of 750:1. It has slit widths of 1, 2.5, 5, 10 & 20 nm and a display range of 0 - 260000 (max). This spectrometer includes four peak power settings: 120 kW, 80 kW, 40 kW, and 20 kW.

The FL 6500 uses three standard excitation filters that allow transmission at wavelengths of 290, 370 & 530 nm and three standard emission filters that allow transmission at wavelengths of 320, 430 & 515 nm. This spectrometer has a filter wheel with 12 slots that accept standard 12.5 mm round filters and an event marker button. It can be controlled via USB 2.0 communication interface and has spectrum™ FL standard & spectrum™ FL enhanced security softwares. This spectrometer requires an AC supply voltage of 100 - 240 V and is available in a compact package that measures 66 (W) x 36 (H) x 64 (D) cm. It is ideal for analyzing samples susceptible to photo-bleaching, phosphorescence analysis, and fluorescence spectroscopy applications.